Improvement in sheet-metal-seaming machines



ofthis specification.

Hsview,

ural position when diagram y -joint to which the invention is applicable. i

o" QLNITEDSTATES PATENT OFFICE.

JOHN MAYsnND w. mussen BROOKLYN, N. Y., AssiGNOns To nnvon AND rnA'rrMnNUrAcrUnrNe COMPANY, or New. YORK Oirv.

l| MPRovEM-E-NT IN SHEET-M ETAL-SEAMING MACHINES.

Specification forming pnrtof Lct'tersl'atent 87,692, dated March 9,'189.

n Kings and State OfvNHew York, `have invented a .new and useful Press for Closing Sheett Metal Scams; and we do herebydeclare that,k

the' following is a full, clear, and exacttde.- scripftion-of the same, reference being had :tokl

the `accompanying drawings, forming a partl This invention is designed more especiallyl for the closing of the seains of petroleum-cans, but is also applicable to all'sheet-metal seams which stand at right angles to the surface of the article upon which they are formed;

Its obj ect is to providefforthe more eec'tualandconvenient closing andu securing of said seams preparatory to the soldering operation; and it consists iu'a novel combination of hin ged jaws and platen, wherebya simple, convenient,

'ra dlefcient press for said purpose is obtained.

furthermore consists inproviding the in-v ,ne ace of one ofthe jaws with small punches l and' `the opposite face of the Aother jaw with ,corresponding recesses, whereby small inden- 1 tations may becformed in the seainduringthe .tpressing operation, for the purpose of preventing longitudinal movement or disarrangement lof the part-s before or during the soldering operation'and of giving additional strength to the joint. when soldered.

VReferringfto the accompanying drawings, Figure 1 represents aflo'ngitudinal section of a pressA for closing sheet-metal seams constructedaccording'y to. our invention]4 Fig. 2

represents'V a'ftransverse'sectionall View ofthe same, showing 'the position of the jawsand platen while retaining a seam under compres# sion; and Fig. 3 representsa similar lsectional .showin g the jaws and platenin. ,their nat-'- notl in use;` andFig. tis a' -showing the character of 'seamor Similar letters of reference indicate'corre- 'spondingpartsvintthelseveralgures;

an' is the bett late of the ppes'shavnig 'A .it's"po'rtion' -Afsuitably lformed and arranged for the slipping ov erof the can Vor other-'article having seams that require to vvbe pressed. Upon the upper t, side of this vprovided,hinged jawsv G` 0.5

.portion A are "Said jaws C .C

'at e'ach endto '.ffrwjete bearings provided'for them in the .bed-plate;

" en, B,

are constructed ot'. steel `orlother metal', and

are `arranged side'by sidenfa horizontal mann er, Iwith their -inner f edges nearly meeting each other, whiletheir-'outer edges are pivoted the bed-plate by `means of pins from their ends and entering or theyinay be hinged or pivoted by any other suitable means, so 'as to allow for the upward opening-lorseparating of said j aws at their inthe said jaws forthepurpose of forcing them upward and keeping them apartwhen not being acted upon bya stronger-downward force.

Directly overthe jaws C C is arrangedaplatin the extremity of a goose-neck, b, projecting from the frame, sothat its downward Inovenient will act upon the jaws in such mannerV as to close them. The jaws when closed down Vdo'not exactly touch eachv other, but leave a narrowfsp'aoe ,between them barely sufficient for containing three thicknesses' of the sheet metal of `which the can or other article is formed, that being the number-of thicknesses l required to form -the seam, which seam is made lto occupy said space during the pressing operation. Upon the inner edge or surface of one -of the jaws are provided one or more small -pnnches,'c, .while at a corresponding point or -points in the inner face ofthe opposite jaw are 'made'a corresponding number of recesses, d, whereby small indentations'are formed during the' pressing operation inthe nesses ot metal composing the seams, for the purpose y of preventing longitudinal slipping or disarrangement of the parts before or during the soldering operationl and of giving ad-A ditional strength to the joint when soldered. A

Inl the operation of this invention thel platen isl raised, land the sheets vof metal,. their}edges having been previously bent and-adjusted in the `manner as represented in the diagram,

Figj4, are insertedbetween the jaws C C' and plat-enfB, lwith their bent edges downward, so

as to be received between the inner faces of the jaws (l C; .After the said sheets of metal,` with their seam or joint,have been'so adjusted withinthe press, thezpl'aten is brought down 4by power suitably applied ,at theV top', thereby forcingthe `in1\.er-faces of the jaws'downward its stem supported within .a guideway 'several thicky v:1nd toward each other, compressing the seam between them, as represented in Fig. 2.,V The small punches c :1re at the same time forced against the side f the seem with sufficient power to cause the yielding of the plates and the receding of the opposite sides thereof into the recesses d, thereby indenting the doubled portion of the two plates composing the seam in such manner into or against each other as to prevent their longitudinal movement o'r siipping of the one Within the other.

What we claim as our invention, and desire to haveseoured by Letters Potent, is-

, 1; The pivoted jams C C andplaten 13,00111- billed and arranged for operating substantially as and for-'the purposes herein set forth.

2. The combination, with 'the jaws G. G, of the punches e and recesses d, `substantially as and forthe'purpose herein set forth.

YJOHN Mms. y

n. W. Buss.

Witnesses: 1

J. SEAVER PAGE, J. W. H. LONNEBERRY. 

